Rathdown School was founded in 1973 from an amalgamation of three schools: Park House School, The Hall School and
Hillcourt School, with Glengara Park School merging in 1987. The school was originally spread across three sites, in Monkstown, Glenageary and Morehampton Road in Dublin 4. In September 1974 the school consolidated at Hillcourt's site in Glenageary (although an additional branch of the Junior School continued to operate in the
Morehampton Road buildings until 1978).
Park House School Park House School was founded in
Morehampton Road, Dublin 4, in 1932 by Froebel-trained Lilian Mary Rouviere Fayle. She was the daughter of Methodist leader WK Fayle, who had a hardware shop in Birr, County Offaly, and the niece of the suffragist, novelist, and playwright
Susanne Rouviere Day. She was educated at Mount Mellick Quaker School and
Polam Hall School in Durham. Park House (named for nearby
Herbert Park) was a mixed school, originally set up as a preparatory school for
Sandford Park, and its ethos mirrored the very progressive approach of its founder. The school pioneered judo and fencing for girls, and encouraged parents to be involved with the school and with their children's education.
Jennifer Johnston was an early pupil, and her performance in the 1936 Christmas play (when she was six) was reported by the Irish Times. Mary Fayle encouraged June Fryer, later June Kuhn, to study modern dance. She introduced June as a student to Erina Brady, German-born pioneer of modern dance. When June Kuhn died in 2011, the Irish Times described her as Ireland's first modern dance performer. After Miss Fayle's death in 1946 the school was taken over by Esther and Beryl Kennedy, and on their retirement the school was bought by a group of parents of existing pupils. They appointed Mrs Cecile Catt, who had taught in the school for 12 years, as headmistress, and she remained in that role for ten years. Then, in 1973, Park House merged with The Hall School and
Hillcourt to form Rathdown School. For several years Rathdown maintained a branch of its junior school in Park House's Morehampton Road buildings, but in 1978 this branch was closed, leaving the whole operation at the Glenageary site.
Stella G. Mew was principal first of Hillcourt and then of Rathdown School from 1972-2002. When she retired she took up a position as CEO of the Yeats Society.
21st century Rathdown was the first school in Ireland where pupils used iPads in class. In 2022, the school announced that it would be becoming co-educational, and would accept boys into the junior school from September 2022, and into the senior school from September 2023, and these changes proceeded on schedule, with around one third of first years in 2023 being boys. == Governance ==